20487448

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{757}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 40932000

約数和(自身を除く): 20444552

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 199, 398, 757, 796, 1514, 1592, 3028, 3383, 6056, 6766, 12869, 13532, 25738, 27064, 51476, 102952, 150643, 301286, 602572, 1205144, 2560931, 5121862, 10243724, 20487448]

約数ペア:

[(1, 20487448), (2, 10243724), (4, 5121862), (8, 2560931), (17, 1205144), (34, 602572), (68, 301286), (136, 150643), (199, 102952), (398, 51476), (757, 27064), (796, 25738), (1514, 13532), (1592, 12869), (3028, 6766), (3383, 6056)]